set term postscript eps 22
set size 1.1,0.8  
set output "sim_hits.eps"
set xlabel "Cache Size / s"
set ylabel "Mean Disk Reads per Frame Time"
plot "fig5.1.data" title "LRU" with lines, "fig5.2.data" title "stream" with lines, "fig5.3.data" title "modulated stream" with lines 6
show output